This is an interesting thread. With all of the cost of living talk, I'd like to ask the other expats, are you mainly here just because of the cost of living? I've now been here over 3 months and can form a reasonable opinion about BA. I won't say Argentina as a whole because most of my experience is in BA.
I'll start with the direct answer and then provide details. Would I consider living in Argentina permanently? The answer is no. This response is more about how I am as opposed to how Argentina is. It's no secret that this country is more European than Latin. The thing is that, with the exception of Spain, France, Germany, and England, I find the rest of Europe to be utterly boring. It is a cultural thing. I prefer the foropenness and semi craziness of people from the rest of the countries in the Americas.
I've also never experienced a country that cares so little about your privacy. I've lied about 700 times so far about my identity because of nonsense like having to provide an ID number because you can afford to buy something that costs more than 75 bucks.
With that said, by no means is it a struggle for me to remain here. I do enjoy myself a lot since I obviously take advantage of the positives like being able to live like Bill Gates little brother and easy access to the 11 Mercosur countries. In the end though, I don't need to factor in the cost of living as a main factor to be somewhere. Unless I was going to move to Singapore....